TWI377142B - Buggy with a braking mechanism - Google Patents

Abstract

Buggy with a frame and at least one wheel provided with a braking mechanism (2), wherein the braking mechanism is moveable between a free position wherein the wheel is rotatable and a braking position wherein rotation of the wheel is limited, wherein the braking mechanism comprises a braking rod (4) which is moveable between a free position wherein the braking rod is free from the wheel and a braking position wherein a first end (4a) of the braking rod is received in a recess (7a) provided in the wheel, limiting rotation thereof.

Description

1377142 VI. Description of the Invention: [Technical Field] The present invention relates to a baby carriage having a brake mechanism, the baby carriage 3 bracket and at least one wheel provided with a brake mechanism, the brake mechanism can be used - the wheel The rotatable free position moves between a brake position in which the rotation of the wheel is restricted. [Prior Art] A stroller for transporting a child generally includes at least three wheels that are connected to each other by a bracket. The wheels are typically attached to the bracket using suitable axles such that the friction as the wheel rotates is as small as possible. The stroller further includes a seat set to comfortably carry the child. The stroller generally also includes a pusher that allows the stroller to be pushed. For example, when placing a baby & a seat, a stroller having a brake is preferred. The rotation of at least one (preferably two) wheels is limited to prevent the stroller from rolling backwards due to the rearward force generated by the overall center of gravity shifting when the child is placed in the seat. Other situations where a brake mechanism is also required, such as on a slope, or simply to prevent any displacement of the stroller. In prior strollers, the braking mechanism is movable between a free position in which the wheel is rotatable and a braking position in which at least one of the wheels is locked to prevent any substantial displacement of the stroller. Existing brake mechanisms include clamping devices that engage the outer surface of the wheel. Since the gripping action of the gripping device is applied to the wheel, the brake mechanism functions as a brake. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a stroller having a sleek, easy-to-use 3,377,142 use and/or effective brake mechanism. In order to achieve the foregoing object, in the stroller of the present invention, the brake mechanism includes a brake lever that can accommodate a free position of the brake lever and the wheel, and a first end of the brake lever. A recess 7 of the wheel moves between the brake positions that limit the rotation of the wheel. By inserting the brake lever into the groove of the wheel, the rotation of the wheel is restricted to cause a stable ... car action. In order to release the locking of the wheel, the braking mechanism moves toward the free position, and the brake lever is from the concave When the slot is removed so that the wheel can be rotated 7 in this free position, the first end of the brake lever is spaced a distance of one from the wheel. Preferably, the wheel includes a plurality of grooves or recesses such that the sensor action is substantially independent of the orientation of the wheel. Preferably, the brake lever is movable in a direction substantially parallel to the axis of the wheel. This makes the composition more streamlined. Thereby, the groove extends on the wheel at a radial position relative to the axle of the wheel. More preferably, the wheel includes a ring extending radially from the plurality of grooves at a distance from the wheel axle to substantially accommodate the brake lever at all positions of the wheel. - According to a preferred embodiment of the stroller of the present invention, the brake mechanism includes a moving member for moving the brake shackle between the positions, the moving member is slanted and the shaft of the vehicle is inclined The engaging surface abuts against the second end of the brake car 2. When the moving member is moved, the second end of the brake lever is guided along the = face [_ the lever moves along the longitudinal axis of the brake lever. = moving the moving member' so that the brake lever can be moved into or out of the wheel' of the wheel to move the braking mechanism between the free position and the braking position.

The i s· J wheel interface has an angle with respect to the longitudinal (four) of the brake lever, and the distance between the shafts of the brake lever can be varied by moving the engagement surface relative to the two-way vehicle. Preferably, the moving member has a mold face to provide a phase which is variable from the wheel. The brake lever is preferably moved in a direction parallel to the axle of the wheel by moving = moving member. When the brake mechanism is in the free position, the brake lever extends toward the engagement surface and the wheel (four) (four) position, such that the brake lever is spaced apart from the wheel by a distance. The engaging surface is moved relative to the brake lever by moving the moving member. (4) The second end of the brake lever is moved until the engaging surface is closer to the other portion of the f wheel, and (4) the lever moves toward the wheel and finally locks the wheel at the braking position. Preferably, the engagement surface includes a recess for receiving the second end of the brake shoe. Thus, the brake lever is locked at the engagement surface in the braking position to prevent the stroller from accidentally moving from the braking position to the free position. The brake lever can slide out of the recess by applying appropriate force to the moving member to move to the free position. According to a further preferred embodiment of the stroller of the present invention, the brake mechanism further includes a pedal for moving the moving member, the pedal being movable relative to the moving member. This allows the pedal to have a degree of freedom with respect to the moving member. For example, the pedal month b is manipulated by the foot and is used to move the moving member from the braking position to the free position or reverse movement. Preferably, the pedal is movable between a first and second braking position of the braking mechanism in the free position at a free position of 1377142. Because the pedal is movable relative to the moving member, the pedal has a braking position and the moving member has only one braking position. The pedal is preferably moveable between the first and second braking positions and does not substantially move the moving member. More preferably, the pedal is biased towards the second brake position. When the pedal moves from the free position to the first brake position, the moving member also moves from the free position to the brake position. For example, when the foot is moved (four), the pedal is automatically biased toward the second braking position. Preferably, an elastic member is provided to move the pedal relative to the moving member toward the second braking position of the pedal. Thus, when the pedal is unactuated and due to a bias, it will cause an automatic displacement from the brake position to the free position. The towel, when the moving member is in the braking position, is preferably received in the groove of the engaging surface to prevent any displacement of the moving member. This also limits the displacement of the pedal. When the brake lever is removed from the recess of the engaging surface, the moving member is freely movable. The brake mechanism moves toward the free position due to the biasing action of the pedal. A preferred embodiment of the stroller according to the present invention The pedal is free from: a displacement along a first direction to the first braking position for moving the moving member from the free position to the braking position 'the displacement of the pedal in a second direction for moving the pedal From the first braking position to the second braking position: a stepwise displacement of the pedal from the second braking position in the second direction for moving the pedal to the free position 4 for moving the moving member from the sensitive The car is located to the free position. Preferably, the pedal is biased toward the second direction. More preferably, an elastic member is provided to urge the pedal in the second direction so that the pedal is preferably at a first position relative to the moving member. Moving between the second position relative to the moving member. The moving member moves in the first direction when the pedal moves in the first direction of the I and when the pedal is in the first position relative to the moving member. However, when the pedal is moved from the first position in the first direction, the pedal first moves to a second position relative to the moving member, and the moving member is moved in the second direction. Preferably, the moving member is in the free position, and the pedal can only be in the first position relative to the moving member. Thus, when the pedal is moved in the first direction, the displacement of the moving member in the first direction is ensured. Preferably, when the pedal is in the free position, the pedal is therefore unable to move relative to the moving member. The pedal can be displaced, for example, by the bracket. Thus, when the moving member is in the free position, it is ensured that the biasing force in the second direction does not move the pedal further in the second direction. Otherwise, when the stroller of the stroller is used, the pedal can move in the first direction without moving the moving member without causing a braking action. Because the pedal is offset in the second direction 'when the pedal is not manipulated, the pedal automatically moves from the first position to the second position relative to the moving member" when the moving member is unrestricted (for example with the brake lever ^

Into the groove) the moving member thus also moves in the second direction towards the free position of the brake mechanism. W (iv) beneficially 'when the pedal is available - the brake lever does not contact the wheel free position... the pedal relative to the first 1377142 brake position of the moving member at the first position, and a pedal relative to the moving member The second position is biased between the second brake position. Thereby, the pedal has three positions (a free position and two brake positions), and when the pedal is not locked, the pedal automatically moves from the first braking position to the second braking position. According to a further preferred embodiment of the stroller of the present invention, the moving member is rotatable along a rotational axis parallel to the axis of the brake lever, the engaging surface extending at a radial position relative to the rotational axis. By rotating the moving member, the engaging surface moves relative to the second end of the brake lever to move the brake lever along the longitudinal axis of the brake lever. The brake lever is moved according to a rotation angle of the moving member about the rotating shaft. Preferably, the pedal is rotatable along a rotational axis of the moving member. In this configuration, the moving member and the pedal rotate along the same axis, causing an effective angular displacement therebetween. Since the pedal is preferably biased toward the second direction, a torsion spring is provided. °

More preferably, the pedal is substantially flush with the bracket when the pedal is in the second braking position. That is, the pedal is in the second position relative to the moving member in the vehicle. More preferably, the bracket includes a body that is substantially flush with the body when in the second braking position. More preferably = body formation - substantially horizontal plate body - the pedal substantially corresponds to the plate according to a preferred embodiment of the present invention. The first direction comprises a knife amount of [s ] ° direction, the second direction Includes an upward direction component. According to a further embodiment of the invention, the stroller includes a pedal for moving the brake mechanism, the pedal being movable between a free position and a first and second position, wherein the brake mechanism is in the free position When the free 2 and the pedal extend at least partially above the plane of the bracket to the eighth vehicle position, the braking mechanism is in the braking position and the pedal extends at least a knife below the plane of the bracket, the second brake The pedal is substantially flush with the stroller's bracket when in position. The operation of the preferred embodiment of the present invention is as follows. When the brake mechanism is in the free position, the radial end of the pedal relative to the axis of rotation preferably extends upwardly relative to the bracket. When there is no load, the pedal is constrained to position the pedal relative to the moving member in the first position. When the pedal is unrestricted, the pedal will be biased toward the second position relative to the moving member. By pressing the pedal, the pedal will rotate in the first direction. This also rotates the moving member in the first direction. Since the engagement face' the first end of the brake lever is moved into the recess of the wheel at a distance from the wheel to limit rotation of the wheel. At the same time, the second end of the brake lever is received in the x groove of the engaging surface to limit the rotation of the moving member in the braking position. The biasing device rotates the pedal upwardly from the first position to the second position relative to the moving member when the pedal is unlocked. Since the brake lever extends into the recess to restrict rotation of the moving member, the pedal does not further rotate the moving member toward the free position in the second and upward direction. In this position (the second braking position), the pedal is substantially flush with the bracket. The second end of the brake lever extends from the recess of the engagement surface by applying an upward force to the pedal, for example by placing the foot 1377142 below the plate. The moving member is now free to rotate and the moving device rotates with the pedal as the biasing means is disposed on the pedal to move the braking mechanism in the free position. The displacement of the pedal is limited such that when the moving member is in the free position, the pedal is in the first position relative to the moving member. The displacement of the pedal from the first braking position to the second braking position allows the pedal to be easily manipulated because the pedal is substantially flush with the plate or at least extends in the second direction relative to the first braking position More. In accordance with a more preferred embodiment of the stroller of the present invention, the brake lever includes a return resilient member to return the brake lever from the brake position to the free position. Thus, when the moving member is moved toward the free position, the automatic displacement of the brake lever is directed to the free position. The elastic member is preferably disposed between the bracket and the brake lever to bias the brake lever away from the wheel. More preferably, when the brake lever having the return spring is engaged with the engaging surface, the moving member moves toward the free position to move the pedal. A biasing device disposed on the slab. The moving member is disposed on the second side of the brake lever of the brake lever as a preferred embodiment of the brake lever. The brake lever includes a brake lever

According to the pair of positive elastic members of the stroller of the present invention, when the brake 摞 a 10 [S] 1377142 = the displacement of the second end of the brake lever is removed from the groove of the engaging surface, the rigid performance of the elastic member is further improved. It is adjusted to the better force that needs to lift the wheel lock with the foot. [Embodiment] Referring to Fig. 9, Fig. iaIr ιώ s 1B ’ shows (d) A baby carriage mechanism 2 is provided between the baby carriage - 22::: 2 = upper and lower. For t and the rear wheel 7, the wheel 7 is a non-connected _ display two 'M and FIG. 1B can be - the wheel 7 can be a wheel = ΑΓ, the car mechanism 2 is set as the wheel 7 of the limited rotation _ car Position: T = free position and a picture: the two-bar 4 is placed in a squat position along the first end of the axle 4 and the wheel m' brake mechanism 2. When the brake mechanism 2 is operated:::=^^ and the first end of the brake lever 4 is moved from the direction of the wheel carriage, and the brake mechanism 2 is placed at a distance D as shown by 1B, as shown in the figure. 7 - the groove is accommodated and shown in Figure 1B, the rotation of the wheel 7. Figure 1A and the groove for the _ position and: = burning axle 3. Construction... Board... Fuck::: = Car mechanism 2' brake machine Connected, details are explained later. The direction of 1 in the moving member 8 in the form of a T piece is pressed, so that the brake mechanism, the pedal 5 can be moved along FIG. 1A to the free position shown by the brake position 1A as shown in FIG. 1B, see FIGS. 2A and 2B. The brake mechanism 2 according to the invention is shown in more detail. The brake mechanism 2 includes a pedal 5 that is rotatable relative to the moving member 8 in the form of a wedge member. The moving member 8 is received in a recess 52 of the pedal 5. The moving member 8 and the pedal 5 respectively form a wheel 7 The wheel of the shaft is rotated by 3 turns. The pedal 5 and the moving member 8 have suitable engaging faces 53, 83 to form a connection between the two and achieve an axis that rotates about the axis formed by the axle 3, and the axle 3 allows the pedal 5 and the moving member 8 to rotate. Some are parallel to the brake rods*. The pedal 5 has a torsion spring 51 to apply a bias to the pedal 5 in the direction of π in Fig. 2B, and the direction of the 2BtII is exactly opposite to the direction of the work in Fig. 2 . The moving member 8 has an engaging surface 81 which extends obliquely with respect to the longitudinal axis of the brake lever 4. The engaging surface 81 is a curved-surface, and the surface has a first

And the second end 8lb' is as shown in Fig. 2B, the first core J is away from the adjacent wheel 7_ by a predetermined distance so that the second: to approach the wheel 7, the rotational moving member % is guided along the engaging surface 81 to make the name 4 - the second end of the servant mechanism 2 is in Figure 1A; 4 moves in the direction of the cymbal. When the second side of the engagement lever 81 is rotated by the second position of the vehicle lever 4, the second end of the brake lever 4 = 8U. When the moving member 8 finally abuts the surface of the adjacent 81b along the side of 1, the second is guided by the indicated braking position. "', the vehicle mechanism 2 is in the braking position of the braking mechanism 2 as shown in Fig. 1B at the two ends 81b, the engaging surface 81 - τ, adjacent to the first groove 82 to prevent the moving member 8 from moving the groove 82 The brake rod 4 is extended to lock the brake rod 4 to the brake position 12. After the details are described, the details of the two rods 4 are as shown in Fig. 2A. [Fig. 2 shows only the brake mechanism bu == car!! 4° this embodiment In the middle, the brake lever 4 includes the components of the tubular body 43 in the form of the W-bar rudder 4, and the two-bar body Μ, the complex and the aligning springs 4 丨 are all disposed in the tube (10) η 43 body 43 'two-bar body 44 The first end 4a and the second end of the brake rod 4 are formed on both sides of the protrusion 4h, respectively. The alignment spring 41 is interposed between the two rods 44 in the tube body 43. After the mechanism 2 to the brake position, 4 right... the first end 4a of the vehicle sun pole 4 is not aligned with the groove 7a of the front wheel 7, and the right spring is inclined 1Λ to provide the brake rod 4-elastic force. When the wheel 7 is slightly rotated to cause a positive can When aligning, the alignment spring 41 can drive the first end 4a to extend into the recess 73. When "", the vehicle mechanism 2 moves from the brake position to the free position, the reset magazine 提- elastic restoring force in a direction opposite to the movement of the braking rod 4 m. When the brake mechanism 2 is in the free position as shown in Figs. 1A, 4 and 8A, the pedal 5 is located at the start position and extends above the bracket 6 of the stroller 1. The state is also shown in Fig. 7A. In this state, the brake lever " month extends a distance away from the wheel 7 and the second end of the brake lever 4 abuts against the adjacent end 81a of the engagement surface 8, which can be more clearly shown in Figure 1 is a view along the direction of 1 V in Figure 3 to show the moving member 8. When a force is applied in the direction of 1, the pedal 5 is rotated about the axle 3 in the direction of I. Since the pedal 5 abuts against the surface Μ of the moving member 8 with the projection 54, the moving member 8 also rotates around the shaft 3 in the direction of []. This state is also shown in Fig. 8A, which allows the projection 54 of the pedal 5 and the moving member 8 to be schematically illustrated in this figure. 13 1377142 Due to the displacement of the moving member 8 in the direction of I, the second end 4b of the brake lever 4 is displaced in the direction of III as shown in Figs. 4 and 7A. The displacement of the pedal 5 in the direction of I eventually causes a state as shown in Figs. 5 and 7B in which the first end 4b is placed in the recess 82 of the engaging surface 81. As shown, the brake lever 4 is moved toward the wheel 7 by a distance d. In this state, it may correspond to the imaginary line 54a in Fig. 8B to display the pedal 5 at the first braking position. The plane on which the pedal extends is now below the plane of the bracket 6.

When the force applied to the pedal 5 by δ is removed, the torsion spring 5 is abutted against the pedal 5, and the pedal 5 is rotated by the force of the torsion spring 51 in the second direction π in the direction of η. Since the pedal 5 and the moving member 8 are movably disposed relative to each other, the pedal 5 is first moved from the first braking position to a second braking position with respect to the movement #8. This illustration is shown in Fig. 8β, in which the pedal 5 is at the first braking position as indicated by 54a, and is moved to a second braking position of 54 due to the torsion spring η. The projection μ of the pedal 5 abuts against the surface 89 of the moving member 8 at this time. In the second brake position, the pedal 5 is substantially flush with the rear end of the bracket 6, as shown in Figure 6. This is the pedal 5

The first - brake position. In another embodiment, the pedal 5 is substantially flush with the rear end of the bracket 6 and the tubular body 43. The groove 82 of the second end 4b of the brake lever 4 that projects into the engaging surface 81 is locked. Even if the moving member 8 is subjected to the biasing force of the _rotating spring 51, the moving member 8 does not continue to rotate in the direction of π. Only when sufficient force II is applied to the pedal 5, the second end of the brake lever 4 will leave the slot 82 and the moving member 8 can be freely rotated at this time, and the pressing force of the torsion spring and the pedal 5 are subjected to the return spring. Under the action of pushing 42, it will rotate back in the first direction as 14 5} to the state as shown in Figs. 4 and 8A. Since the pedal 5' which is biased at this time is located at a starting position. When the pedal 5 is located at this initial step, the pedal 5 is restricted to move further in the direction of η with respect to the moving member 8.

In addition, it is also possible to bias the moving member 8 in the second direction due to the restoring force of the return spring 42. Once the second end 4b is disengaged from the recess 82, the second end 4b abuts against the engaging surface 8 and the second end abuts against the engaging surface μ, which also drives the moving member 8 to move in the direction of „. 8 is moved in the direction of π, and the pedal 5 is moved relative to the moving member 8 toward the second braking position as shown in Fig. 8a, and the moving member 8 is further moved in the direction of the pedal 5, which finally results in Fig. 8 The present invention is not limited to the illustrated embodiment, and extends to other embodiments that are within the scope of the scope of the patent application. [Simplified Schematic] FIG. 1A and FIG. The free position and the throttle position;

Figure 2A shows a brake mechanism according to the present invention; Figure 2B shows the brake mechanism of Figure 2a in an exploded view; Figures 3 to 6 illustrate the brake mechanism at different stages; Figures 7A and 7B are illustrated in cross-section The moving member; Figures 8A and 8B illustrate the pedal in relation to the relationship; and Figure 9 illustrates a stroller in accordance with the present invention. 15 1377142 [Description of main component symbols] 1 .......... Stroller 7 .......... Wheel 2 .......... Brake mechanism 7a... ...groove 3 ..... axle 4 .......... brake lever 4a ......... first end 4b... ...the second end 41 ......... aligning the spring 42 ... ... the return spring 43 ... ... tube body 5 ... . . pedal 51 .... torsion spring 52 ... ... groove 53 ... ... joint surface 54, 54a · protrusion 6 .......... bracket 6a.........wheel seat 8 ..........moving member 81 ......... interface 81a .......the first end 81b.......the second end 82 .........the groove 83 ....the joint surface 88 .... ..... surface 89 ......... surface I ........... direction II .......... direction III ....... Direction IV .........direction D..........distance d ..........distance

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Claims (1)

1377142 Supplementary Patent Application No. '10135 ' Supplementary 'Replacement of Uncorrected Instruction Sheets ・ ' VII. Patent Application Scope · · I A baby stroller with a brake mechanism that includes a bracket and — a bracket and at least one grooved wheel; wherein the brake mechanism comprises: a brake lever having a first end, the first end being selectively insertable into the recess to limit the Wheel rotation, wherein the brake lever restricts rotation of the wheel when the brake mechanism is moved to the brake position, or the brake lever does not contact the wheel when in a free position; 'The brake mechanism includes a brake mechanism for moving the brake a moving member of the rod, the braking mechanism further comprising a pedal for moving the moving member, the pedal is movable relative to the moving member, the pedal being at a starting position of the braking mechanism at the free position, Moving between a brake position and a second brake position, the brake mechanism is located at the brake position when the pedal is in the first brake position or the second brake position*2. A stroller having a brake mechanism according to the scope of claim 1 of the invention, wherein the (four) rut includes a pair of elastic members, # the brake mechanism is moved from the free position to the brake position 'and the brake lever is not The pair of elastic members can provide a compression force of the brake lever when the yoke recess can be placed. X 3. According to the invention, the stroller with the brake mechanism described in the second paragraph of the patent scope has a two-bar body and the pair of elastic members are disposed between the two rod bodies. 4. A stroller having a brake mechanism according to claim 1, wherein the moving member comprises an oblique extension with the longitudinal axis of the brake lever 17 1377142 Patent Application No. 99101350, supplemented and amended Line Description Replacement Page Correction Period: The interface of September 101 is to abut against a second end of the brake lever. 5. A stroller having a brake mechanism according to claim 4, wherein the engagement surface includes a recess for receiving the second end of the brake lever when the brake position is present. 6. The stroller having a brake mechanism according to the invention of claim 2, wherein the pedal is movable between the first brake position and the second brake position and does not substantially move the moving member. 7. The stroller having a brake mechanism according to claim 6, wherein the brake mechanism further comprises a torsion spring having a biasing force applied to the first brake position to the pedal when the When the brake mechanism is placed in either the brake position or the free position, the moving member abuts the pedal with an identical surface. 8. The baby store having a brake mechanism according to claim 1, wherein the pedal has a displacement from the starting position along a first direction to the first braking position for rotating the moving member, Then the moving member causes the braking mechanism to be in the braking position, and the pedal is further moved to the free position in a second direction of the first direction of the phase 2 to switch the moving member, and the braking mechanism also follows It is in this free position. • According to ^ (4), the fourth item of material (four) car mechanism baby carriage money 'the moving piece can be rotated along the parallel to the brake rod sleeve: condensation, the interface is relative to the axis of rotation in a diameter According to the scope of the patent application, the pedal can be rotated about the rotation axis of the baby carriage having the braking mechanism according to the nine items. 18 1377142 Supplementary to the patent application No. 99101350, revised description of the replacement line after the correction date: September 11, 2011. According to the application of the patent scope, the stroller with the brake mechanism is the first direction. A component in a downward direction is included, the first direction including a component in an upward direction. 12. A stroller having a brake mechanism according to the scope of the invention, wherein the pedal is substantially flush with the bracket when in the second brake position. 〃 13. The invention of claim 4, wherein the brake lever includes a reset elastic member to return the 煞 = from the brake position to the free position. The mechanism 14. According to the patent application scope flute 4 s, wherein the moving member can (4) the stroller having the braking mechanism: the braking mechanism can be moved to the braking position and the free position = 19